An IC socket can be defined as an electromechanical device, which provides a removable interface between the IC package and the system circuit board with minimal effect on signal integrity. A removable interface is the major reason for using a socket, and it is required for a variety of reasons, including ease of assembly, reworking, upgrading and cost savings. The cost advantage is saving the IC by not attaching it permanently to the PCB (printed circuit board). The socket is permanently (soldered) or semi-permanently (solder less) attached to the PCB, while the IC device can be inserted into or removed from the socket without disturbing the connections to the PCB. This allows the IC to function as it is soldered into the PCB, but it can be replaced by another IC or multiple ICs. The socket helps to test, evaluate and inspect the complete system. The socket also allows in the field for maintenance, testing, replacement or upgrades. This becomes a critical factor because of technology evolution. ■